The aircraft were moved on Monday from RAF Mildenhall in Suffolk to Germany and elsewhere.
It is unclear exactly what the threat is. But according to the newspaper, the US has raised the threat level at the air base and nearby RAF Lakenheath to the second-highest level.
This is the second aircraft move in a short period. In October, the US recalled all its bombers from RAF Fairford after suspicions of a planned terrorist attack the previous month. At the time, several men were arrested in vans near the base on suspicion of plotting attacks.
British Prime Minister Andy Burnham has previously said there are signs that Iran “played a role” in the incident.
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